In the land after the unification of the Qin Dynasty at the end of the Warring States Period, the refugees grew up from tenant farmers struggling to survive to "good farmers" who mastered advanced farming techniques and helped their neighbors become rich. Under strict laws and the pressure of survival, they understood that "the value of land is not only the output, but also the foundation for settling down and living", and completed the growth and transformation from "foreigners" to "local defenders".
